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WO2008123451A1 - Roller screw - Google Patents

Roller screw Download PDF

Info

Publication number
WO2008123451A1
WO2008123451A1 PCT/JP2008/056183 JP2008056183W WO2008123451A1 WO 2008123451 A1 WO2008123451 A1 WO 2008123451A1 JP 2008056183 W JP2008056183 W JP 2008056183W WO 2008123451 A1 WO2008123451 A1 WO 2008123451A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
circulating pipe
passage
direction turning
twisted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2008/056183
Other languages
French (fr)
Japanese (ja)
Inventor
Akimasa Yoshida
Takashi Sakuyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
THK Co Ltd
Original Assignee
THK Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by THK Co Ltd filed Critical THK Co Ltd
Priority to JP2009509232A priority Critical patent/JP5226671B2/en
Publication of WO2008123451A1 publication Critical patent/WO2008123451A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
    • F16H2025/2271—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers with means for guiding circulating rollers

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Pinball Game Machines (AREA)

Abstract

Intended is to provide a roller screw, which is freed from any undercut even if a circulating pipe having a twisted roller return passage of a rectangular section is halved. In order to circulate a roller, there are provided a direction turning passage constituting part (9) and a circulating pipe (8). A direction turning passage is formed in the direction turning passage constituting part (9), and a roller returning passage (11) is formed in the circulating pipe (8). This circulating pipe (8) is constituted by jointing a pair of split pieces (18a and 18b), which are halved along the apexes (11a and 11b) of the diagonal lines of the roller returning passage (11) having a section shaped rectangular and twisted.
PCT/JP2008/056183 2007-03-30 2008-03-28 Roller screw Ceased WO2008123451A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009509232A JP5226671B2 (en) 2007-03-30 2008-03-28 Roller screw

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007095046 2007-03-30
JP2007-095046 2007-03-30

Publications (1)

Publication Number Publication Date
WO2008123451A1 true WO2008123451A1 (en) 2008-10-16

Family

ID=39830936

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/056183 Ceased WO2008123451A1 (en) 2007-03-30 2008-03-28 Roller screw

Country Status (2)

Country Link
JP (1) JP5226671B2 (en)
WO (1) WO2008123451A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012077247A1 (en) * 2010-12-08 2012-06-14 日本精工株式会社 Ball screw device
WO2025243800A1 (en) * 2024-05-22 2025-11-27 日本精工株式会社 Ball screw

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1085086A (en) * 1965-03-24 1967-09-27 Textron Inc Antifriction screw and nut assembly
JPH0439354U (en) * 1990-07-30 1992-04-03
JP2000161459A (en) * 1998-11-20 2000-06-16 Hiroshi Teramachi Cross roller screw device
JP2006118649A (en) * 2004-10-22 2006-05-11 Thk Co Ltd Roller screw
JP2006125578A (en) * 2004-10-29 2006-05-18 Nsk Ltd Ball screw

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1085086A (en) * 1965-03-24 1967-09-27 Textron Inc Antifriction screw and nut assembly
JPH0439354U (en) * 1990-07-30 1992-04-03
JP2000161459A (en) * 1998-11-20 2000-06-16 Hiroshi Teramachi Cross roller screw device
JP2006118649A (en) * 2004-10-22 2006-05-11 Thk Co Ltd Roller screw
JP2006125578A (en) * 2004-10-29 2006-05-18 Nsk Ltd Ball screw

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012077247A1 (en) * 2010-12-08 2012-06-14 日本精工株式会社 Ball screw device
JP5500268B2 (en) * 2010-12-08 2014-05-21 日本精工株式会社 Ball screw device
US9003911B2 (en) 2010-12-08 2015-04-14 Nsk Ltd. Ball screw device
WO2025243800A1 (en) * 2024-05-22 2025-11-27 日本精工株式会社 Ball screw

Also Published As

Publication number Publication date
JP5226671B2 (en) 2013-07-03
JPWO2008123451A1 (en) 2010-07-15

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